S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Loss of power in 2007 s600

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Old Nov 13, 2019 | 12:30 AM
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Carlos Martinez's Avatar
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2007 s600
Loss of power in 2007 s600


Codes that came up
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Old Nov 13, 2019 | 01:19 AM
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Agent Seattle's Avatar
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W221 s600
I'm a total newb here, but I'd guess a coil pack as the numbers are indicating misfire in cylinders 7-12?

there is a place that has updated/improved the coil design- I don't know if we are allowed to share links? look for v12icpack- they even let you rent a coilpack to determine if that's the cause.

Last edited by Agent Seattle; Nov 13, 2019 at 01:22 AM.
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Old Nov 13, 2019 | 01:42 AM
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Carlos Martinez's Avatar
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2007 s600
Originally Posted by Agent Seattle
I'm a total newb here, but I'd guess a coil pack as the numbers are indicating misfire in cylinders 7-12?

there is a place that has updated/improved the coil design- I don't know if we are allowed to share links? look for v12icpack- they even let you rent a coilpack to determine if that's the cause.
Yeah I was just on that site, I sent them an email and I will be calling tomorrow. My cars an 07 S600. Tonight. I rolled in 711 and my light turned on and the sound of my muffler delete was awful. Went to Oreilys Auto where they do free diagnostics tests and those 7-12 cylinders were misfiring and something about TWC. I'm gonna read up on the other codes after I get off here. On there site, they said it could be the ICU or Voltage Regulator. I'm gonna read up more, but if anyone can help me out I'd appreciate it. Thanks
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Old Nov 20, 2019 | 04:36 PM
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2007 S600
I've been thru this a few times. Once it was the coil pack the other time it was the Voltage Transformer that sits atop the engine. I replaced them via v12icpack. Clark was very cool, knowledgeable and accessible. I would advise you to do all the following prior: Check/replace the 02 sensors. They can assist in misfire codes. A spark plug change...all 24 of them! Make sure they are the proper NGK plugs. Only OEM will do. Check for valve cover gasket leaks. Oil dripping into one of the spark plug passages can cause issues. When you remove the coil packs, check the red boots on them. A bad or missing boot can cause problems. After exhausting all those issues, rent the coil and VT from Clark. The parts are an upgrade of what MB sells and comes with a nice warranty. It seems like a lot to do but your car will purr like a kitten for a LONG time to come! Good luck!
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